Gear pump



FIG. 1 is a perspective view of the gear pump;

FIG. 2 is a right side elevational view thereof; the left side being a mirror image thereof;

FIG. 3 is a top side elevational view thereof; the bottom side being a mirror image thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a back elevational view thereof. 

The ornamental design for a gear pump, as is shown and described herein. 